The pressure reducing valves are defined as the devices that help to cut off the fluid or gas supply when the pressure reaches a certain limit. They are also called as pressure regulators. The main function of these valves in the fluid supply lines or tanks is that they reduce the high pressure levels in the stored liquid to secure or usable pressure levels so that it can be used in some applications. The pressure reducing valves used nowadays are very different in their operation procedures and their capabilities than the older ones. Sometimes these valves use stiffer springs, velocity boosting or lever ratio.

Advantages of pressure reducing valves

• The first advantage is regarding the oxy acetylene welding and cutting process. Here the processes need gases to be in specific pressures so the pressure reducing valves are used for the purpose.
• The second one is based on the usage of propane and LPG. In order to regulate the fluctuating pressures in the propane or LPG tanks, these valves are used.
• The third one is in the use of recreational vehicles.
• The final advantage of these valves is that they are used in the air tanks that are used by people who go for deep sea diving.

Relief valve

The relief valve can be defined as a device which is used for controlling or reducing the pressure inside a vessel which may be created due to instrument failure, fire or process upset. This is done by letting the pressurized fluid to course from a supplementary passage to out of the vessel. This relief valve is designed in order to open at specific pressure level so that the pressure will not damage the vessels or other expensive equipments. When the specific pressure level is exceeded, the relief valve opens and it acts as the path of minimum obstruction, through which a portion of liquid can go to outside through the auxiliary tubes. The diverted fluid is routed in to the atmosphere and this causes the pressure inside the system to drop to normal levels.